01775nas a2200229   4500008004100000245007500041210006900116260000900185300001400194490000600208520101000214653001701224653002201241653003401263653002401297653003001321653002801351100001601379700001701395700001601412856011701428       2008                        eng d00aMap integrity constraint verification by using visual language parsing0 aMap integrity constraint verification by using visual language p  c2008  a386 - 3950 v63 aIn the last decade there has been an increasing interest in the use of tools for the creation of geographic maps. However, these tools include functionalities that allow users to insert information without verifying their consistency with the constraints defined by the designer. In this paper we propose an approach based on visual language parsing for guaranteeing the integrity of data produced during the map editing process. According to our approach, constraints are expressed by using high-level data model, such as OMT-G, and converted in a proper visual language grammar automatically. From such a grammar, a parser able to identify incorrect aggregation of spatial data input is generated. The grammar formalism also allows us to associate suitable semantic actions with productions in order to perform automatic corrections of inconsistent input data, error recognition and visualization, prompting actions for error recovery. We also present a system prototype supporting the proposed process.10aData Quality10aGrammar Formalism10aIntegrity Constraint Checking10aSpatial Consistency10aTopological Relationships10aVisual Language Parsing1 aFatto, V.D.1 aDeufemia, V.1 aPaolino, L.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84865514855&partnerID=40&md5=c3f7b43fbb1550bfd3198eec27ecb801